- Miscellaneous Intelligence, 427 
7. Remains of the Post-tertiary om or Elephant in Montana. 
re “Montana Radiator” states that a large molar tooth and a tusk 
Fales ” in Last-Chance Gulch opposite the end of Broad street, seventeen 
feet below the surface, and four feet from the rock beneath. The tusk is 
15 feet long, and 4 feet from the smaller extremity it is 274 inches in 
circumference ; it was found 25 feet farther up the gulch than the tooth. 
Ar rtificial Lvory.—tThe best imitation of ivory—a kind’ now much 
used—is made by dissolving either caoutchoue or gutta-percha in chloro- 
form, passing chlorine into the solution until it has acquired a slightly 
yellow tint, washing it well with alcohol, then adding, in fine powder, 
sulphate of baryta, “sulphate of lime, sulphate of Jead, alumina or chalk, 
in quantities proportioned to the density so tee desired then hardening 
it, and finally subjecting it to heavy pressu -like substance 
is thus made which i i be great harduess i will receive a high pi es 
Les Mondes, Nov. 9 
9. Solution of Suk —A solution of silk may be made by boiling it 
with a concentrated solution of ehlorid of zinc over an excess of od of 
the same metal, until it no longer discolors the tincture of litmus. By 
dialysis, silk may be obtained again in a colorless inadareus form.— 
ss n. 
pe artificial light a ec —Mr. Sayers, of Paris, obtains 
a light almost equal in pow at of magnesium, and much chea ir 
from the ie a a neste: re of a parts of well-dried and powdered 
nitrate of potash w of flowers of sulphur and 6 of red se iy of 
rsenic. The tgs it only 12 cents a kilogram.—Zb., Jan. 4. 
11. Mew test for distinguishing Cane sugar from the s sugar 
—H. Lepray observes that the sugar of te blackens bichlorid of 
= ti ae cane sth vine not.—/b., Dec. 14, 
S 
= 
Z 
So 
of obsidian from ee dod and others of siateial which 
ae distance. It is pe 
d phe ia, ‘This expedition leaves 
n, and make, Hammerfest, the bay 
On stein ye it pro- 
5, olar expedition of a eaaalig an 
y the Duich. It will next spl bo land, and t 
white as far as possible toward t 
open sea; and reaching Cikestatie will ieples the coast, going north 
